* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef AVFORMAT_H
-#define AVFORMAT_H
+#ifndef FFMPEG_AVFORMAT_H
+#define FFMPEG_AVFORMAT_H
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define LIBAVFORMAT_VERSION_INT ((51<<16)+(10<<8)+0)
-#define LIBAVFORMAT_VERSION 51.10.0
+#define LIBAVFORMAT_VERSION_INT ((51<<16)+(15<<8)+0)
+#define LIBAVFORMAT_VERSION 51.15.0
#define LIBAVFORMAT_BUILD LIBAVFORMAT_VERSION_INT
#define LIBAVFORMAT_IDENT "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION)
*/
void av_destruct_packet(AVPacket *pkt);
-/* initialize optional fields of a packet */
-static inline void av_init_packet(AVPacket *pkt)
-{
- pkt->pts = AV_NOPTS_VALUE;
- pkt->dts = AV_NOPTS_VALUE;
- pkt->pos = -1;
- pkt->duration = 0;
- pkt->flags = 0;
- pkt->stream_index = 0;
- pkt->destruct= av_destruct_packet_nofree;
-}
+/**
+ * Initialize optional fields of a packet to default values.
+ *
+ * @param pkt packet
+ */
+void av_init_packet(AVPacket *pkt);
/**
- * Allocate the payload of a packet and intialized its fields to default values.
+ * Allocate the payload of a packet and initialize its fields to default values.
*
* @param pkt packet
* @param size wanted payload size
int av_new_packet(AVPacket *pkt, int size);
/**
- * Allocate and read the payload of a packet and intialized its fields to default values.
+ * Allocate and read the payload of a packet and initialize its fields to default values.
*
* @param pkt packet
* @param size wanted payload size
/*************************************************/
/* fractional numbers for exact pts handling */
-/* the exact value of the fractional number is: 'val + num / den'. num
- is assumed to be such as 0 <= num < den */
+/**
+ * the exact value of the fractional number is: 'val + num / den'.
+ * num is assumed to be such as 0 <= num < den
+ * @deprecated Use AVRational instead
+*/
typedef struct AVFrac {
int64_t val, num, den;
} AVFrac attribute_deprecated;
} AVProbeData;
#define AVPROBE_SCORE_MAX 100 ///< max score, half of that is used for file extension based detection
+#define AVPROBE_PADDING_SIZE 32 ///< extra allocated bytes at the end of the probe buffer
typedef struct AVFormatParameters {
AVRational time_base;
int mpeg2ts_raw:1; /**< force raw MPEG2 transport stream output, if possible */
int mpeg2ts_compute_pcr:1; /**< compute exact PCR for each transport
stream packet (only meaningful if
- mpeg2ts_raw is TRUE */
+ mpeg2ts_raw is TRUE) */
int initial_pause:1; /**< do not begin to play the stream
immediately (RTSP only) */
int prealloced_context:1;
#define AVFMT_RAWPICTURE 0x0020 /**< format wants AVPicture structure for
raw picture data */
#define AVFMT_GLOBALHEADER 0x0040 /**< format wants global header */
-#define AVFMT_NOTIMESTAMPS 0x0080 /**< format doesnt need / has any timestamps */
+#define AVFMT_NOTIMESTAMPS 0x0080 /**< format does not need / have any timestamps */
#define AVFMT_GENERIC_INDEX 0x0100 /**< use generic index building code */
typedef struct AVOutputFormat {
const char *name;
const char *long_name;
const char *mime_type;
- const char *extensions; /**< comma separated extensions */
+ const char *extensions; /**< comma separated filename extensions */
/** size of private data so that it can be allocated in the wrapper */
int priv_data_size;
/* output support */
*/
const struct AVCodecTag **codec_tag;
+ enum CodecID subtitle_codec; /**< default subtitle codec */
+
/* private fields */
struct AVOutputFormat *next;
} AVOutputFormat;
const char *long_name;
/** size of private data so that it can be allocated in the wrapper */
int priv_data_size;
- /** tell if a given file has a chance of being parsing by this format */
+ /**
+ * tell if a given file has a chance of being parsed by this format.
+ * The buffer provided is guranteed to be AVPROBE_PADDING_SIZE bytes big
+ * so you dont have to check for that unless you need more.
+ */
int (*read_probe)(AVProbeData *);
/** read the format header and initialize the AVFormatContext
structure. Return 0 if OK. 'ap' if non NULL contains
- additionnal paramters. Only used in raw format right
+ additional paramters. Only used in raw format right
now. 'av_new_stream' should be called to create new streams. */
int (*read_header)(struct AVFormatContext *,
AVFormatParameters *ap);
* @param stream_index must not be -1
* @param flags selects which direction should be preferred if no exact
* match is available
+ * @return >= 0 on success (but not necessarily the new offset)
*/
int (*read_seek)(struct AVFormatContext *,
int stream_index, int64_t timestamp, int flags);
struct AVInputFormat *next;
} AVInputFormat;
+enum AVStreamParseType {
+ AVSTREAM_PARSE_NONE,
+ AVSTREAM_PARSE_FULL, /**< full parsing and repack */
+ AVSTREAM_PARSE_HEADERS, /**< only parse headers, don't repack */
+ AVSTREAM_PARSE_TIMESTAMPS, /**< full parsing and interpolation of timestamps for frames not starting on packet boundary */
+};
+
typedef struct AVIndexEntry {
int64_t pos;
int64_t timestamp;
#define AVINDEX_KEYFRAME 0x0001
int flags:2;
- int size:30; //yeah trying to keep the size of this small to reduce memory requirements (its 24 vs 32 byte due to possible 8byte align)
+ int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs 32 byte due to possible 8byte align).
int min_distance; /**< min distance between this and the previous keyframe, used to avoid unneeded searching */
} AVIndexEntry;
/**
* real base frame rate of the stream.
* this is the lowest framerate with which all timestamps can be
- * represented accurately (its the least common multiple of all
+ * represented accurately (it is the least common multiple of all
* framerates in the stream), Note, this value is just a guess!
* for example if the timebase is 1/90000 and all frames have either
* approximately 3600 or 1800 timer ticks then r_frame_rate will be 50/1
*/
AVRational r_frame_rate;
void *priv_data;
+
/* internal data used in av_find_stream_info() */
- int64_t codec_info_duration;
+ int64_t first_dts;
+#if LIBAVFORMAT_VERSION_INT < (52<<16)
int codec_info_nb_frames;
+#endif
/** encoding: PTS generation when outputing stream */
- AVFrac pts;
+ struct AVFrac pts;
/**
* this is the fundamental unit of time (in seconds) in terms
AVRational time_base;
int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */
/* ffmpeg.c private use */
- int stream_copy; /**< if TRUE, just copy stream */
- enum AVDiscard discard; ///< selects which packets can be discarded at will and dont need to be demuxed
+ int stream_copy; /**< if set, just copy stream */
+ enum AVDiscard discard; ///< selects which packets can be discarded at will and do not need to be demuxed
//FIXME move stuff to a flags field?
/** quality, as it has been removed from AVCodecContext and put in AVVideoFrame
- * MN:dunno if thats the right place, for it */
+ * MN: dunno if that is the right place for it */
float quality;
- /** decoding: position of the first frame of the component, in
- AV_TIME_BASE fractional seconds. */
+ /**
+ * decoding: pts of the first frame of the stream, in stream time base.
+ * only set this if you are absolutely 100% sure that the value you set
+ * it to really is the pts of the first frame
+ * This may be undefined (AV_NOPTS_VALUE).
+ * @note the ASF header does NOT contain a correct start_time the ASF
+ * demuxer must NOT set this
+ */
int64_t start_time;
- /** decoding: duration of the stream, in AV_TIME_BASE fractional
- seconds. */
+ /**
+ * decoding: duration of the stream, in stream time base.
+ * If a source file does not specify a duration, but does specify
+ * a bitrate, this value will be estimates from bit rate and file size.
+ */
int64_t duration;
char language[4]; /** ISO 639 3-letter language code (empty string if undefined) */
/* av_read_frame() support */
- int need_parsing; ///< 1->full parsing needed, 2->only parse headers dont repack
+ enum AVStreamParseType need_parsing;
struct AVCodecParserContext *parser;
int64_t cur_dts;
int64_t pts_buffer[MAX_REORDER_DELAY+1];
} AVStream;
+#define AV_PROGRAM_RUNNING 1
+
+typedef struct AVProgram {
+ int id;
+ char *provider_name; ///< Network name for DVB streams
+ char *name; ///< Service name for DVB streams
+ int flags;
+ enum AVDiscard discard; ///< selects which program to discard and which to feed to the caller
+} AVProgram;
+
#define AVFMTCTX_NOHEADER 0x0001 /**< signal that no header is present
(streams are added dynamically) */
int flags;
#define AVFMT_FLAG_GENPTS 0x0001 ///< generate pts if missing even if it requires parsing future frames
#define AVFMT_FLAG_IGNIDX 0x0002 ///< ignore index
+#define AVFMT_FLAG_NONBLOCK 0x0004 ///< do not block when reading packets from input
int loop_input;
/** decoding: size of data to probe; encoding unused */
const uint8_t *key;
int keylen;
+
+ unsigned int nb_programs;
+ AVProgram **programs;
} AVFormatContext;
typedef struct AVPacketList {
const char *filename, const char *mime_type, enum CodecType type);
/**
- * Print nice hexa dump of a buffer
- * @param f stream for output
+ * Send a nice hexadecimal dump of a buffer to the specified file stream.
+ *
+ * @param f The file stream pointer where the dump should be sent to.
* @param buf buffer
* @param size buffer size
+ *
+ * @see av_hex_dump_log, av_pkt_dump, av_pkt_dump_log
*/
void av_hex_dump(FILE *f, uint8_t *buf, int size);
/**
- * Print on 'f' a nice dump of a packet
- * @param f stream for output
+ * Send a nice hexadecimal dump of a buffer to the log.
+ *
+ * @param avcl A pointer to an arbitrary struct of which the first field is a
+ * pointer to an AVClass struct.
+ * @param level The importance level of the message, lower values signifying
+ * higher importance.
+ * @param buf buffer
+ * @param size buffer size
+ *
+ * @see av_hex_dump, av_pkt_dump, av_pkt_dump_log
+ */
+void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size);
+
+/**
+ * Send a nice dump of a packet to the specified file stream.
+ *
+ * @param f The file stream pointer where the dump should be sent to.
* @param pkt packet to dump
* @param dump_payload true if the payload must be displayed too
*/
void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
+/**
+ * Send a nice dump of a packet to the log.
+ *
+ * @param avcl A pointer to an arbitrary struct of which the first field is a
+ * pointer to an AVClass struct.
+ * @param level The importance level of the message, lower values signifying
+ * higher importance.
+ * @param pkt packet to dump
+ * @param dump_payload true if the payload must be displayed too
+ */
+void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload);
+
void av_register_all(void);
/** codec tag <-> codec id */
AVInputFormat *fmt, AVFormatParameters *ap);
/**
- * Open a media file as input. The codec are not opened. Only the file
+ * Open a media file as input. The codecs are not opened. Only the file
* header (if present) is read.
*
* @param ic_ptr the opened media file handle is put here
* @param filename filename to open.
* @param fmt if non NULL, force the file format to use
* @param buf_size optional buffer size (zero if default is OK)
- * @param ap additionnal parameters needed when opening the file (NULL if default)
+ * @param ap additional parameters needed when opening the file (NULL if default)
* @return 0 if OK. AVERROR_xxx otherwise.
*/
int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
*
* @param ic media file handle
* @return >=0 if OK. AVERROR_xxx if error.
- * @todo let user decide somehow what information is needed so we dont waste time geting stuff the user doesnt need
+ * @todo Let user decide somehow what information is needed so we do not waste time geting stuff the user does not need.
*/
int av_find_stream_info(AVFormatContext *ic);
/**
* Read a transport packet from a media file.
*
- * This function is absolete and should never be used.
+ * This function is obsolete and should never be used.
* Use av_read_frame() instead.
*
* @param s media file handle
* @param id file format dependent stream id
*/
AVStream *av_new_stream(AVFormatContext *s, int id);
+AVProgram *av_new_program(AVFormatContext *s, int id);
/**
* Set the pts for a given stream.
/**
* Does a binary search using av_index_search_timestamp() and AVCodec.read_timestamp().
- * this isnt supposed to be called directly by a user application, but by demuxers
+ * This is not supposed to be called directly by a user application, but by demuxers.
* @param target_ts target timestamp in the time base of the given stream
* @param stream_index stream number
*/
* Updates cur_dts of all streams based on given timestamp and AVStream.
*
* Stream ref_st unchanged, others set cur_dts in their native timebase
- * only needed for timestamp wrapping or if (dts not set and pts!=dts)
+ * only needed for timestamp wrapping or if (dts not set and pts!=dts).
* @param timestamp new dts expressed in time_base of param ref_st
* @param ref_st reference stream giving time_base of param timestamp
*/
/**
* Does a binary search using read_timestamp().
- * this isnt supposed to be called directly by a user application, but by demuxers
+ * This is not supposed to be called directly by a user application, but by demuxers.
* @param target_ts target timestamp in the time base of the given stream
* @param stream_index stream number
*/
int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
/**
- * allocate the stream private data and write the stream header to an
- * output media file
+ * Allocate the stream private data and write the stream header to an
+ * output media file.
*
* @param s media file handle
* @return 0 if OK. AVERROR_xxx if error.
*
* The packet must contain one audio or video frame.
* If the packets are already correctly interleaved the application should
- * call av_write_frame() instead as its slightly faster, its also important
- * to keep in mind that completly non interleaved input will need huge amounts
- * of memory to interleave with this, so its prefereable to interleave at the
- * demuxer level
+ * call av_write_frame() instead as it is slightly faster. It is also important
+ * to keep in mind that completely non-interleaved input will need huge amounts
+ * of memory to interleave with this, so it is preferable to interleave at the
+ * demuxer level.
*
* @param s media file handle
* @param pkt the packet, which contains the stream_index, buf/buf_size, dts/pts, ...
/**
* parses width and height out of string str.
+ * @deprecated Use av_parse_video_frame_size instead.
*/
-int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
+attribute_deprecated int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
/**
* Converts frame rate from string to a fraction.
+ * @deprecated Use av_parse_video_frame_rate instead.
*/
-int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
+attribute_deprecated int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
/**
- * Converts date string to number of seconds since Jan 1st, 1970.
- *
+ * Parses \p datestr and returns a corresponding number of microseconds.
+ * @param datestr String representing a date or a duration.
+ * - If a date the syntax is:
* @code
- * Syntax:
- * - If not a duration:
* [{YYYY-MM-DD|YYYYMMDD}]{T| }{HH[:MM[:SS[.m...]]][Z]|HH[MM[SS[.m...]]][Z]}
- * Time is localtime unless Z is suffixed to the end. In this case GMT
- * Return the date in micro seconds since 1970
- *
- * - If a duration:
- * HH[:MM[:SS[.m...]]]
- * S+[.m...]
* @endcode
+ * Time is localtime unless Z is appended, in which case it is
+ * interpreted as UTC.
+ * If the year-month-day part isn't specified it takes the current
+ * year-month-day.
+ * Returns the number of microseconds since 1st of January, 1970 up to
+ * the time of the parsed date or INT64_MIN if \p datestr cannot be
+ * successfully parsed.
+ * - If a duration the syntax is:
+ * @code
+ * [-]HH[:MM[:SS[.m...]]]
+ * [-]S+[.m...]
+ * @endcode
+ * Returns the number of microseconds contained in a time interval
+ * with the specified duration or INT64_MIN if \p datestr cannot be
+ * succesfully parsed.
+ * @param duration Flag which tells how to interpret \p datestr, if
+ * not zero \p datestr is interpreted as a duration, otherwise as a
+ * date.
*/
int64_t parse_date(const char *datestr, int duration);
*/
int av_filename_number_test(const char *filename);
-/* grab specific */
-int video_grab_init(void);
-int audio_init(void);
-
-/* DV1394 */
-int dv1394_init(void);
-int dc1394_init(void);
+/**
+ * Generate an SDP for an RTP session.
+ *
+ * @param ac array of AVFormatContexts describing the RTP streams. If the
+ * array is composed by only one context, such context can contain
+ * multiple AVStreams (one AVStream per RTP stream). Otherwise,
+ * all the contexts in the array (an AVCodecContext per RTP stream)
+ * must contain only one AVStream
+ * @param n_files number of AVCodecContexts contained in ac
+ * @param buff buffer where the SDP will be stored (must be allocated by
+ * the caller
+ * @param size the size of the buffer
+ * @return 0 if OK. AVERROR_xxx if error.
+ */
+int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size);
#ifdef HAVE_AV_CONFIG_H
#include "os_support.h"
-int strstart(const char *str, const char *val, const char **ptr);
-int stristart(const char *str, const char *val, const char **ptr);
-void pstrcpy(char *buf, int buf_size, const char *str);
-char *pstrcat(char *buf, int buf_size, const char *s);
-
void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
#ifdef __GNUC__
#endif /* HAVE_AV_CONFIG_H */
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* AVFORMAT_H */
-
+#endif /* FFMPEG_AVFORMAT_H */
projects / ffmpeg / blobdiff